“Air Quality Index Advisory Unhealthy for Sensitive Groups” means an Air Quality Index value of
101 to 150. People with asthma, children, and older adults are the groups most at risk as defined
and explained by the Environmental Protection Agency (EPA) at
https://www.airnow.gov/sites/default/files/2018-04/aqi_brochure_02_14_0.pdf (Feb. 2024), herein
incorporated by reference. No later editions or amendments are incorporated. These resources
are available at no cost from the Environmental Protection Agency (EPA) at
https://www.airnow.gov/aqi/aqi-basics/. These resources are also available for public inspection
and copying at the Colorado Department of Early Childhood, 710 S. Ash St., Denver, CO 80246,
during regular business hours.
More information can be found here